Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4935045 | Method of manufacturing a preform for asymmetrical optical fiber | Ryozo Yamauchi, Matsuhiro Miyamoto, Osamu Fukuda | 1990-06-19 |
| 4834786 | Method of manufacturing a preform for asymmetrical optical fiber | Ryozo Yamauchi, Matsuhiro Miyamoto, Osamu Fukuda | 1989-05-30 |